<template>
    <!-- 商品详情轮播图 -->
    <view class="product-bg" :style="[swiperHeight]">
        <swiper
            :indicator-dots="indicatorDots"
            indicator-active-color="var(--view-theme)"
            :autoplay="autoplay"
            :circular="circular"
            :interval="interval"
            :duration="duration"
            @change="change"
            v-if="isPlay"
        >
            <!-- #ifndef APP-PLUS -->
            <swiper-item v-if="videoline">
                <view class="item">
                    <view v-show="!controls" class="item-box">
                        <video
                            id="myVideo"
                            :src="videoline"
                            objectFit="cover"
                            controls
                            style="width: 100%; height: 100%"
                            show-center-play-btn
                            show-mute-btn="true"
                            auto-pause-if-navigate
                            :custom-cache="false"
                            :enable-progress-gesture="false"
                            :poster="imgUrls[0]"
                            @pause="videoPause"
                        ></video>
                    </view>
                    <view class="poster" v-show="controls">
                        <image class="image" :src="imgUrls[0]"></image>
                    </view>
                    <view class="stop" v-show="controls" @tap="bindPause">
                        <image class="image" src="../../static/images/stop.png"></image>
                    </view>
                </view>
            </swiper-item>
            <!-- #endif -->
            <!-- #ifdef APP-PLUS -->
            <swiper-item v-if="videoline">
                <view class="item">
                    <view class="poster" v-show="controls">
                        <image class="image" :src="imgUrls[0]"></image>
                    </view>
                    <view class="stop" v-show="controls" @tap="bindPause">
                        <image class="image" src="../../static/images/stop.png"></image>
                    </view>
                </view>
            </swiper-item>
            <!-- #endif -->
            <block v-for="(item, index) in imgUrls" :key="index">
                <swiper-item v-if="videoline ? index >= 1 : index >= 0">
                    <image :src="item" class="slide-image" />
                </swiper-item>
            </block>
        </swiper>
        <!-- #ifdef APP-PLUS -->
        <view v-if="!isPlay" style="width: 100%; height: 750rpx">
            <video
                id="myVideo"
                :src="videoline"
                objectFit="cover"
                controls
                style="width: 100%; height: 100%"
                show-center-play-btn
                show-mute-btn="true"
                autoplay="true"
                auto-pause-if-navigate
                :custom-cache="false"
                :enable-progress-gesture="false"
                :poster="imgUrls[0]"
                @pause="videoPause"
            ></video>
        </view>
        <!-- #endif -->
        <view class="w-full flex-center absolute left-0 bottom-54rpx z-20" v-if="imgUrls.length > 1 && showDot">
            <block v-for="(_, index) in imgUrls" :key="index">
                <view class="dot_item h-4 rd-2rpx" :style="{ 'background-color': currents == index ? '#fff' : 'rgba(255,255,255,0.4)', width: dotWidth + 'rpx' }"></view>
            </block>
        </view>
        <view class="w-full flex-center abs-lb h-200 white-jianbian"></view>
    </view>
</template>

<script>
export default {
    props: {
        imgUrls: {
            type: Array,
            default: () => []
        },
        videoline: {
            type: String,
            default: ''
        },
        showDot: {
            type: Number,
            default: 1
        },
        autoHeight: {
            type: Number,
            default: 0
        }
    },
    data() {
        return {
            indicatorDots: false,
            circular: true,
            autoplay: true,
            interval: 3000,
            duration: 500,
            currents: 0,
            controls: true,
            isPlay: true,
            videoContext: '',
			imgHeight:0
        };
    },
    mounted() {
        if (this.videoline) {
            this.imgUrls.shift();
        }
        // #ifndef APP-PLUS
        this.videoContext = uni.createVideoContext('myVideo', this);
        // #endif
    },
    computed: {
        dotWidth() {
            let windowWidth = uni.getSystemInfoSync().windowWidth;
            return (windowWidth * 2 - (40 + (this.imgUrls.length - 1) * 12)) / this.imgUrls.length;
        },
        swiperHeight() {
            let windowWidth = uni.getSystemInfoSync().windowWidth;
			let that = this;
            uni.getImageInfo({
                src: this.imgUrls[0],
                success: (image) => {
                    that.imgHeight = image.height * windowWidth / image.width;
                }
            });
			
			if (this.autoHeight) {
			    return {
			        height: `${this.imgHeight}px`
			    };
			} else {
			    return {
			        height: '750rpx'
			    };
			}
        }
    },
    methods: {
        videoPause(e) {
            // #ifdef APP-PLUS
            this.isPlay = true;
            this.autoplay = true;
            // #endif
        },
        bindPause: function () {
            // #ifndef APP-PLUS
            this.videoContext.play();
            this.$set(this, 'controls', false);
            this.autoplay = false;
            // #endif
            // #ifdef APP-PLUS
            this.isPlay = false;
            this.videoContext = uni.createVideoContext('myVideo', this);
            this.videoContext.play();
            // #endif
        },
        change: function (e) {
            this.$set(this, 'currents', e.detail.current);
        }
    }
};
</script>

<style scoped lang="scss">
.item-box {
    width: 100%;
    height: 100%;
}

.product-bg {
    width: 100%;
    position: relative;
}

.product-bg swiper {
    width: 100%;
    height: 100%;
    position: relative;
}

.product-bg .slide-image {
    width: 100%;
    height: 100%;
}

.product-bg .pages {
    position: absolute;
    background-color: #fff;
    height: 34rpx;
    padding: 0 10rpx;
    border-radius: 3rpx;
    right: 30rpx;
    bottom: 30rpx;
    line-height: 34rpx;
    font-size: 24rpx;
    color: #050505;
}

#myVideo {
    width: 100%;
    height: 100%;
}

.product-bg .item {
    position: relative;
    width: 100%;
    height: 100%;
}

.product-bg .item .poster {
    position: absolute;
    top: 0;
    left: 0;
    height: 750rpx;
    width: 100%;
    z-index: 9;
}

.product-bg .item .poster .image {
    width: 100%;
    height: 100%;
}

.product-bg .item .stop {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 136rpx;
    height: 136rpx;
    margin-top: -68rpx;
    margin-left: -68rpx;
    z-index: 9;
}

.product-bg .item .stop .image {
    width: 100%;
    height: 100%;
}

.dot_item ~ .dot_item {
    margin-left: 12rpx;
}
.white-jianbian {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(0, 0, 0, 0.2) 100%);
}
</style>
